正牵引
- 网络normal drag
正牵引-
分析了张性走滑与压性走滑、正牵引与逆牵引、走滑断层与火成岩活动的关系。
The relation between tensional and compressive shove , normal and reverse drag , shove fault and the action of igneous rocks are analyzed .
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工作人员正以绞盘牵引过磅的重车。
Workers were hauling a loaded train by a winch .
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造成煤层压薄和增厚的正断层及反牵引正断层
Normal fault causing coal bed thin and thick and " reversed - drag " normal fault
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上颌后缩的治疗包括传统正颌治疗和牵引成骨治疗，由于牵引成骨具有应用范围广、创伤小、效果确切、复发少的优点，现成为治疗上颌后缩的理想方法。
Mangement of the maxillary retrusion includes orthognathous treatment and distraction osteogenesis . Distraction osteogenesis has become the ideal method because of the advantages such as extensive application , less damage , exact effect and lower recurrence rate .